show the entire MySQL table

<?php

    try{
    $pdo = NEW PDO('mysql:host=localhost;dbname=july2020project','root','password');
    }catch(PDOException $e){
        die($e->getMessage());
    }


    $result = $pdo->query("SELECT * FROM users");

    $all = $result->fetchAll();

    $col = $all[0];

    $columns = array();

    echo "<pre>";


    foreach($col AS $key=>$value){

        if(is_string($key)){

            $columns[] = $key;

        }

    }

    echo "<table border='1'>";
    foreach($columns AS $value){

        echo "<th>$value</th>";

    }

    for($x=0;$x<count($all);$x++){

        echo "<tr>";
            for($y=0;$y<count($columns);$y++){

                echo "<td>".$all[$x][$y]."</td>";

            }
        echo "</tr>";

    }




?>